Date: Thu, 20 Oct 2005 17:11:44 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-stable@FreeBSD.org, f-q <freebsd-questions@FreeBSD.org> Cc: James Long <stable@museum.rain.com> Subject: Re: bzegrep behaviour not consistent with egrep? Message-ID: <200510201711.49382.jkim@FreeBSD.org> In-Reply-To: <20051020205704.GC4000@holestein.holy.cow> References: <20051020194725.GA10376@ns.museum.rain.com> <20051020205704.GC4000@holestein.holy.cow>
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On Thursday 20 October 2005 04:57 pm, Parv wrote:
> in message <20051020194725.GA10376@ns.museum.rain.com>,
> wrote James Long thusly...
>
> > Should these two commands produce identical output?
> >
> > $ bzegrep "38436|41640" /var/log/maillog.0.bz2 | wc -l
> > 0
> > $ bzcat /var/log/maillog.0.bz2 | egrep "38436|41640" | wc -l
> > 121
Can you try the patch for src/gnu/usr.bin/grep/grep.c?
> And more fun, try also "egrep -J| wc", which is similar to the 2d
> case above.
Can you elaborate the fun, please?
Thanks,
JK
> Seems like the first "e" in "bzegrep" is erroneous.
> - Parv
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Index: grep.c
===================================================================
RCS file: /home/ncvs/src/gnu/usr.bin/grep/grep.c,v
retrieving revision 1.31
diff -u -r1.31 grep.c
--- grep.c 14 May 2005 05:35:04 -0000 1.31
+++ grep.c 20 Oct 2005 20:55:05 -0000
@@ -1359,16 +1359,16 @@
if (program_name && strrchr (program_name, '/'))
program_name = strrchr (program_name, '/') + 1;
+ if (strlen (program_name) > 1 && program_name[0] == 'b' && program_name[1] == 'z') {
+ BZflag = 1;
+ program_name += 2;
+ }
#if HAVE_LIBZ > 0
- if (program_name[0] == 'z') {
+ else if (strlen (program_name) > 0 && program_name[0] == 'z') {
Zflag = 1;
++program_name;
}
#endif
- if (program_name[0] == 'b') {
- BZflag = 1;
- ++program_name;
- }
#if defined(__MSDOS__) || defined(_WIN32)
/* DOS and MS-Windows use backslashes as directory separators, and usually
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